A grieving family are urging drivers to watch this horrific footage, which shows the moment a lorry smashes into a row of parked cars while the driver uses his phone on the motorway.

A mum and her three children who were on their way back from a family holiday were killed in the devastating crash.

Lorry driver Tomasz Kroker had been changing the music on his phone when he ploughed into stationary traffic in 2015, killing Tracy Houghton, 45, and her sons Ethan, 13, and Joshua, 11, as well as her partner's daughter, Aimee Goldsmith, 11.

Police officers from Surrey have released the distressing footage in a bid to stop drivers from using their phones while behind the wheel.

It was revealed in court that Tomasz Kroker was scrolling music selections for almost 1km on the A34 near Newbury (Image: PA)

Kroker, 30, was sentenced to 10 years by Reading Crown Court after pleading guilty to four counts of causing death by dangerous driving and a single count of causing serious injury by dangerous driving.

In court it was revealed that he was scrolling through his phone looking at music for almost one-kilometre on the A34 near Newbury.